baber/WOPTO huggingface dataset:
Patent GB-562799-A (GB)
Title: Improvements in or relating to devices responsive to angular or rotational movement of a shaft or equivalent
IPC: B65G23/00
Filed: 1943-01-25
Abstract: 562,799. Speed responsive devices. REDLER CONVEYORS, Ltd., ALLIN, C. W., and PARKER, R. Jan. 25, 1943, Nos. 1267 and 2257. [Class 106 (iii)] [Also in Group XXXVII] A driven member arranged to he rotated by a machine to be controlled &c., exerts a rotational drag on a motion responsive member to move it within predetermined limits in one direction, a switch or indicator being operated by the return, under gravity or spring, of the motion responsive member. In the example, a pair of flanged discs 16, 17 a,re clamped, with the inner races of ball bearings 18, 19 on a shaft 13 connected to the machine and the assembly is mounted in a casing 12 containing thin oil. Between the discs an annular body 25 runs, carrying the outer races of the bearings and, externally, a rod 31 with a roller 32. As the shaft 13 rotates, the frictional drag of the oil &c. causes the rod 31 to rise against gravity, and move past a hinged arm on switch without operating it, as far as a predetermined stop. When speed of rotation falls, the arm falls and operates the switch to give a signal or stop the motor driving the machine. The return of the arm may be spring-assisted. In a modification, the inner and outer parts of a ball bearing may replace the discs and annular body, while in a further example the driving and driven members comprise discs facing one another with blade for impelling oil from one to the other.
Patent GB-544175-A (GB)
Title: Improvements in negative feedback thermionic amplifiers
IPC: H03F1/36
Filed: 1941-01-31
Abstract: 544,175. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. Jan. 31, 1941, No. 1287. Convention date, Feb. 2, 1940. [Class40 (v)] In a negative feedback amplifier noise components arising from the power supply, which are normally increased due to the feedback connection, are reduced by means which impress the noise components on a grid of the amplifier in opposite phase. Fig. 3 shows a two-stage push-pull amplifier with negative feedback applied by resistances 39, 40 in which a condenser potentiometer 41, 43 applies. part of the noise voltage from the H.T. source to the grids of the output stage. In a modification, Fig. 4 (not shown) a positive feedback is applied through resistances connected between the output anodes and the centre tapping of the input transformer which is connected through a resistance to, earth. With this arrangement the voltages feedback cancel out in so. far as the push-pull stage is balanced and the residual noise voltage is in phase opposition to that introduced into the circuit by the negative feedback coupling. Fig. 5 shows an arrangement using two.. negative feedback paths from each output stage comprising resistances 116, 117 between plate and cathode and resistances 120, 121 cross connected between plate and grid. In a further modification, Fig. 6 (not shown) part of the noise voltage occurring In the anode supply is applied to the centre tap of the input transformer. With this arrangement low frequency voltages arising across the filter output condenser are also fed back thus preventing any tendency to low frequency oscillation due to these potentials. Fig. 7 shows an arrangement in which an inverter tube 244 is used to. feed one side of a push-pull output. In this arrangement, as shown, negative feedback is applied from each output anode to the cathode, and to the screen grid respectively of the input valve 241 through resistances 252, 255. Since the noise voltages in the two paths are in phase these may be arranged to balance one another in the output. Instability at high frequencies is avoided by providing condenser 271 between the anode of the inverter 244 and the anode of the input valve 241. The second feedback instead of being to the screen grid may be to the control grid. A resistance-capacity network 263, 264 may protect the output tubes from excessive transient voltages and the consequent loss at high frequencies may be compensated by reduced feedback at these frequencies by suitable choice of the condenser 259. The invention is also applicable to single side circuits. The Specification gives a mathematical analysis to show the conditions under which the hum voltage across the load is reduced to zero.
Patent GB-1500362-A (GB)
Title: Apparatus for calcining raw material
IPC: F27B/
Filed: 1975-01-13
Abstract: 1500362 Heating powdered material in suspension; cement manufacture FULLER CO 13 Jan 1975 [27 Feb 1974] 1302/75 Heading F4B Calcining apparatus comprises a vessel 30 formed by a lower section 31 and an upper, substantially coaxial section 32 of larger diameter, a saw material inlet 34, a fuel inlet 35, a combustion air inlet 38 and an outlet 41 for spent combustion air and calcined material, the saw material inlet 34 being either above and directed to the fuel inlet 35, Fig. 2, or below it, Fig. 5 (not shown). The outlet 41 may be connected to a cyclone separator 43, and the fuel may be pulverized coal supplied from a hopper 36 by compressed air. As shown in Fig. 1, the apparatus is employed in manufacturing cement and is associated with a pre-heater 1 fed with the spent combustion air from the gas outlet 46 of the separator 43, and a rotary kiln 50 supplied with the calcined material from the outlet 47 of the separator 43 and supplying clinkered material to a cooler 6. Air from the cooler 6 is discharged partly through a dust collector 64 to atmosphere and partly through a pipe 54 to a mixing chamber 70 which is also supplied through a pipe 71 with exhaust gases from the kiln 50. In a modified cement manufacturing plant, Fig. 4 (not shown), the calcining apparatus is fed with air solely from the cooler, the exhaust gases from the kiln being mixed with the spent combustion gases exiting from the separator before passing to the preheater.
Patent GB-669181-A (GB)
Title: Improvements in or relating to a window operating device
IPC: E05F15/16
Filed: 1950-01-18
Abstract: 669,181. Epicyclic gearing. ROLLINSON, E. W. (Hupp Corporation). Jan. 18, 1950, No. 1307/50. Classes 80 (i) and 80 (iii). [Also in Group X] Vehicle window-operating mechanism including both a handle 10 and reversible electric motor 32 respectively coupled to the operating gearing through a uni-directional spring clutch 11, 15, 17, and a plate clutch 35 and allowing for separate' or simultaneous operation comprises a sun gear 18 integral with lugged segment 17 of the spring clutch, another sun gear 22 attached to a worm wheel 23 meshing with a worm 24 on the motor shaft, and intermeshing planet gears 20, 21 mounted on pins 25 on a carrier 26 integral with a shaft 27 having a gear wheel 28 which drives the window operating gear or quadrant 30. During automatic operation, the motor rotates sun wheel 22 through the worm and worm wheel and this reacts through the planet wheels against the locked sun wheel 18 to rotate the carrier, shaft 27, and the operating gear; sun gear 18 is locked by spring 15 expanding against its housing when surfaces b of clutch segment lugs 17' contact sides d of hooks 14 on the spring. For manual operation, movement of the hand crank causes lugs 13 of clutch segment 11 to engage the inner sides b of the spring hooks to contract the spring, the drive being transmitted through lugs 17'. Rotation of sun wheel 18 causes the planet wheel to move round sun wheel 22 locked by the worm, and so effect rotation of the carrier and shaft. The spur wheel gearing may be replaced by bevel gears. Another modification comprises one or more planet gears carried on an arm or spider secured to the operating shaft and engaging both a sun gear coupled to the hand crank and another sun gear in the form of a ring toothed internally to engage the planet wheel and externally to engage the motor-driven worm. The motor and differential coupling may be mounted separately from the manual driving elements, the coupling shaft and manual operating shaft being connected by sprockets and chains.
Patent GB-1309612-A (GB)
Title: Stabilized cammonium nitrate and preparation thereof
IPC: C05C1/02
Filed: 1971-01-11
Abstract: 1309612 Stabilized ammonium nitrate CHEMICAL CONSTRUCTION CORP 11 Jan 1971 [22 Jan 1970] 1317/71 Heading C1A Solid, particulate ammonium nitrate is stabilized against thermal shock at phase transition temperatures (e.g. 32‹ and 83‹ C.) by incorporating into the molten nitrate a small amount of a silicofluoride, a phosphate and a sulphate and solidifying said melt. The molten nitrate may contain up to about 5% wt. of water. Preferred silicofluorides are Na, K, Mg, Zn or NH 4 , preferred sulphates are NH 4 , Na, K or Ca and preferred phosphates are monoammonium, diammonium or trisodium and the preferred amount of each additive is up to 0À5 wt. per cent. The phosphate and sulphate may be added to the molten nitrate, or its precursor nitric acid, as phosphoric acid and sulphuric acid during production of NH 4 NO 3  and neutralized by addition of a base, e.g. NH 3 , NaOH, Na 2 CO 3 , KOH or K 2 CO 3 , in situ. The preferred method of solidifying the product is to spray it into an air stream.
Patent GB-160040-A (GB)
Title: An improvements in incandescent gas mantles
IPC: F21H1/00
Filed: 1920-01-15
Abstract: 160,040. South Metropolitan Gas Co., and Gair, C. J. D. Jan. 15, 1920. Mantles.-A thoria mantle contains 0.2 to 0.4 per cent of ceria. The Provisional Specification also states that the proportion of ceria may be between 0.2 and 0.5 per cent.
Patent GB-901997-A (GB)
Title: A method of producing an interpolymer
IPC: B01J19/24
Filed: 1958-08-14
Abstract: A solution of styrene in natural rubber, polychloroprene or acrylonitrile-butadiene copolymer is flowed through an elongated tubular reactor and is subjected to increasingly higher temperatures to effect progressive interpolymerization.  In the example benzoyl peroxide is used as catalyst and the apparatus described has successive reaction zones at 100 DEG C., 130 DEG C., 155 DEG C. and 180 DEG C.
Patent GB-956933-A (GB)
Title: Improvements in or relating to apparatus for depositing super-saturated sugar solutions
IPC: A23G3/02
Filed: 1962-01-15
Abstract: 956,933. Toffee &c. depositing. R. C. JAHN. Jan. 11, 1963 [Jan. 15, 1962], No. 1449/62. Heading A2B. For depositing hot, supersaturated sugar solutions such as boiled sugar or toffee into moulds or on to a moving band, without the occurrence of graining, there is employed an apparatus (Figs. 1 and 2) comprising a heated chamber 1 having an inlet 3 and an outlet 4, a heated supply hopper 15 connected with the inlet, a valve means 24 opening and closing the inlet and outlet. alternatively, a flexible diaphragm 7 cooperating with the chamber 1 which flexes in timed relation with the valve means to draw solution from the hopper through the inlet and pass it through the outlet, and means 9 to flex the diaphragm.
Patent GB-127924-A (GB)
Title: Improvements in and relating to Percussion Fuzes for Projectiles.
Inventor: CLEATHERO THOMAS
IPC: F42C15/26
Filed: 1918-01-25
Abstract: 127,924. Cleathero, T., Lumb, C. F., and Spurr, F. Jan. 25, 1918 Projectile fuses.-Relates to percussion fuses of the kind in which the arming is effected by air pressure during flight. According to the invention, the striker is located at, and normally locked to, the nose of the fuse, and has a vaned or winged surface which, by the action of the air during flight, causes the striker to advance and arm the fuse. In the construction shown in Fig. 1, the striker a<2>, carrying the firing-needle a<3>, screws into the fuse-body, and has a head a which is provided with cuts or channels forming vanes (not shown). The head is normally locked against the fuse-body, as shown. The needle a<3> passes into a centrifugal member c carrying a percussion cap w When the projectile is discharged, the striker a<2> is freed from the locking action of a body b, which sets back by inertia, and the striker is screwed forward. The member e, being then freed by the needle a<3>, moves transversely, bring- ing the cap w into line with the striker, which is driven in when impact occurs, producing ignition. The cap-carrier e becomes locked in the operative position by spring bolts c<3>, engaging in slots in a sleeve e<2>, or by equivalent means. Fig. 15 shows. a modification in which the striker a<2> screws into a sleeve f<1> which carries the firing-pin, the pin being normally held by a shearing-flange f<5>. During flight, the striker screws outwardly, the sleeve f<1> being prevented from rotating, and, on impact, the striker, sleeve, and firing-pin are driven in together. The underside of the head of the striker may be coned, and the screw-threads on the striker and its socket may be tapered. An expansible ring or other means may be provided for locking the striker in the forward position.
Patent GB-450460-A (GB)
Title: Safety guards for motor and other vehicles
IPC: B60R21/34
Filed: 1935-01-16
Abstract: 450,460. Vehicle lifeguards. GRIFFIN, H. C., 39, Ripley Gardens, Mortlake, London. Jan. 16, 1935, No. 1486. [Class 103 (ii)] A vehicle front-wheel guard comprises a guard proper F, curved transversely and vertically, and a flexible scoop member, or, as shown, a scoop member G pivoted at its inner end to the guard F and connected by links I to a pivoted gate J which, on meeting an obstruction is moved inwardly forcing the scoop G and the rear parts of the links against spring action into the position shown in broken lines, in which the rear parts of the links cover the sides of the scoop. The guard F is supported by horizontal, transversely-slidable, tubular members F1, F2, the member F1 being slidable between rollers H carried in frames D1 verticallyslidable against rubber cushioning means in brackets D bolted to angle-iron supports C, the members F2 being slidable between guide blocks E in a fixed support. The guard is adapted to follow the wheel movements by means of an arm L1 on the guard elastically connected to an arm L bolted to the wheel housing. Each of the guards on opposite wheels may be moved transversely automatically when the gate J is depressed, by means of a cam M acting between the gate and the corresponding support C. Rearwheel guards provided in addition to the front wheel guards have the guard proper rigidly secured to the chassis frame and may be operated by side guards which swing upwardly longitudinally of the vehicle against spring action. A centre-guard acting similarly to the wheel-guards extends across the front of the chassis frame.
Patent GB-188261-A (GB)
Title: Improvements in flushing cisterns
IPC: E03D1/05
Filed: 1922-01-18
Abstract: 188,261. Coney, C., and Coney, F. Jan. 18, 1922. Siphon-discharging water-waste preventers.- The bell 10 is formed with a serrated lower edge 17 to silence the end of the flush, and with hoods or vanes 18 to retard the fall when the bell is released. The lower end 6 of the stand pipe is curved and fitted with a hinged valve 9. To ensure a silent supply the inlet pipe 24 is prolonged as shown, and, to prevent back suction of the water, is perforated at 25.
Patent GB-725560-A (GB)
Title: Improvements in automatic phase alteration couplings for shafts
IPC: F16D3/10
Filed: 1953-01-20
Abstract: 725,560. Automatically-adjustable couplings. BOSCH GES., R. Jan. 20, 1953 [Feb. 9, 1952], No. 1574/53. Class 80 (2). In a circumferentially-adjustable coupling for automatically timing ignition or injection in internal-combustion engines, pins 4, secured to the radial flange 2 of a hub 1 secured to the driven shaft, pivotally carry centrifugal weights 5, cam surfaces 6 on which engage projections 7 extending from a ring 8 which is claw-coupled to the driving shaft, return springs 12 being arranged between each pin 4 and the corresponding projection 7. A cup-shaped member 10 welded to the ring 8 bears within a cup member 3 screwed on the flange 2. Packing rings 14, 15 are provided to enable the coupling to be filled with oil.
Patent GB-196360-A (GB)
Title: Improvements in the treatment of leather and the like
IPC: C14C11/00
Filed: 1922-01-19
Abstract: 196,360. Shaw, A. H., Roy, N. B., and Atkin, J. Jan. 19, 1922. Compound sheet materials; single coatings.- Leather has applied to it a coating or thin sheet of india-rubber or rubber compound which is then vulcanized by the " Peachey " process. The product may be finished by the, application of oils, varnishes, shellac, &c. The rubber may be in the form of latex. The following examples of rubber compounds are given : (1) Plantation crÞpe rubber, lithopone, celestial blue; (2) plantation crepe rubber, leather buffings, lithopone, ultramarine. Specification 129,826, [Class 70, India-rubber &c.], is referred to.
Patent GB-1488931-A (GB)
Title: Fluorination and sulpho-fluorination of synthetic resins and fibres
IPC: D06M101/16
Filed: 1975-01-16
Abstract: 1488931 Fluorinating and oxidizing polymeric fibres AIR PRODUCTS & CHEMICALS Inc 16 Jan 1975 [17 Jan 1974 (2) 19 Feb 1974] 1910/75 Addition to 1395949 Headings C3P and C3R [Also in Division B5] A fibre, formed from any synthetic resin other than a polyester, is treated for less than 15 minutes with a gas containing less than 5% by volume of elemental oxygen and no more than 20% by volume of elemental fluorine. Fibres so treated in the examples are of nylon 6,6, polypropylene, polyacrylonitrile and polyurethane. In addition Example 3 discloses the treatment of polyethylene film. The treatment is said to induce chain division and formation of carboxyl groups.
Patent GB-1359661-A (GB)
Title: Biscuit forming machine
IPC: A21C11/10
Filed: 1971-01-14
Abstract: 1359661 Biscuit machines BAKER PERKINS Ltd 7 Jan 1972 [14 Jan 1971] 1952/71 Heading B5A A machine for forming repetitively impressioned or marked dough sheets of predetermined length from a continuous sheet of dough comprises a belt 1 for carrying the continuous dough sheet between a backing roll 2 and a marking or impressing roll 3 and between the or another backing roll and a continuously rotatable knife 4 the latter being adapted to approach the dough sheet during each revolution of the knife 4 and to form transverse cuts in the dough sheet during selected revolutions of the knife by relative movement of the backing roll and knife axes towards each other. To produce the transverse cuts without disturbing the depth of the impressions a pneumatic cylinder 12 pivots a backing roll support frame 5 about the axis of the impressing roll 3 towards the knife 4. The cylinder 12 may act either through an eccentric 14 as shown, or about a stop 16 to produce the upward movement of the frame 5. The cylinder 12 is operated by a cam 15 driven by a layshaft 11 which also drives a pinion 10 driving the impressing roll 3 and the knife 4. The roll 2 is provided with eccentric mountings 7 in the frame 5 so that the depth of impression may be varied. The roll 3 may be provided with sets of serrated blades 8, 9 for forming longitudinal and transverse rows of perforations (Fig. 5) in the dough sheet. Either the knife 4 may be arranged to clear the dough sheet during all revolutions exept when a transverse cut is required when it operates along a line of already formed perforations or it may have a serrated blade and be arranged to provide one of the transverse rows of perforations in each revolution except when a transverse cut is required when it cuts through the sheet instead. The depth of cut of the knife 4 may be adjusted without affecting the depth of marking by pivoting the frame 5 though an eccentric 5 and link 6a. The eccentrics 6, 7 may be adjustable by hand wheel operated wheel and worm devices to accommodate different sized knives and backing rolls 2. The latter may be covered with rubber.
Patent GB-621604-A (GB)
Title: Improvements in sewing machines
IPC: D05B73/00
Filed: 1947-01-22
Abstract: 621,604. Sewing-machines. AUSTLID, A. Jan 22, 1947, No. 1979. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 23, 1947]. Drawings to Specification. [Class 112] Frames.-In order to facilitate manufacture by die-casting the frame is formed in two halves interconnected by welding or by screws or the like, one part being provided with a plurality of integral tapered portions engaging with corresponding recesses in the other part to prevent any relative sliding displacement of the parts. The projections and recesses may be circular or of any other form, and the screws may pass through them or be placed at other points on the abutting surfaces of the parts. The parts preferably meet on the longitudinal central plane of the machine, and have semi-circular recesses which cooperate to form supports for the shaft bearings.
Patent GB-1501702-A (GB)
Title: Method of removing nitrogen oxides from a gas containing them
IPC: B01D53/56
Filed: 1975-01-16
Abstract: 1501702 Removing nitrogen oxides from gases containing them KUREHA KAGAKU KOGYO KK 16 Jan 1975 [21 Jan 1974 10 May 1974 4 Dec 1974] 1988/75 Heading CIA Nitrogen oxides are removed from gases containing them by contacting the gas to be treated with an aqueous scrubbing solution which contains a ferrous salt and an alkali metal, alkaline earth metal or ammonium salt of sulphurous acid so as to absorb the oxides and form therein a corresponding alkali metal, alkaline earth metal or ammonium salt of imidodisulphonic acid (e.g. NH(SO 3 Na) 2  and thereafter recovering the imidodisulphonic acid salt thus formed from the solution. The nitrilotrisulphonic acid salt (e.g. and the sulphamic acid salt (e.g. are usually formed together with the imidodisulphonic acid salt. The imidodisulphonic acid salt (and any nitrilotrisulphonic acid salt and sulphamic acid salt present with it) may be converted to ammonium sulphate by hydrolysis of the recovered salt under acidic conditions at a temperature higher than 100 C. The absorption solution may contain an organic acid, e.g. acetic acid, propionic acid, butyric acid, malonic acid, succinic acid, an ethylenediamine tetracarboxylic acid (e.g. ethylenediamine tetraacetic acid), a nitrilotricarboxylic acid (e.g. nitrilotriacetic acid) or mixtures thereof. The imidodisulphonic acid is most easily precipitated as its potassium or calcium salt but it may be initially formed as a solution of a salt other than the potassium or calcium salt and then converted to the potassium or calcium salt for precipitation. The filtrate obtained after separating the imidodisulphonic acid salt may be recirculated for contact with fresh gas. In the process of Example 8 the imidodisulphonic acid salt was hydrolysed to ammonium sulphate which was not separated but converted to ammonia by treatment with NaOH.
Patent GB-837579-A (GB)
Title: Improvements in and relating to injection moulding machines
Inventor: SMITH SAMUEL CHARLES HENRY
IPC: B29C45/54
Filed: 1958-01-21
Abstract: 837,579. Injection-moulding machines. WINDSOR Ltd., R. H. Jan. 15, 1959 [Jan. 21, 1958], No. 2014/58. Class 87(2). An injection plunger 11 is yieldably coupled to its operating piston 13 so that it can move back beyond its normal retracted position under the pressure of material being fed to the injection cylinder 4 by a pre-plasticising unit 1, so as to operate switch means 26 to stop the preplasticising unit when the pressure exceeds a predetermined value and while injection is taking place. The yieldable coupling may be a lost motion connection between the plunger 11 and piston rod 12, or may include springs 22 as shown. After injection, plunger 11 is withdrawn and an. abutment 24 closes a normally open switch 25. This energises a solenoid 27 which opens a valve 28 to supply hydraulic fluid from a pump 7 to a cylinder 5 to operate the preplasticising unit. When the cylinder 4 is filled the plunger 11 is pushed back so that the abutment 24 operates switch 26 to de-energise solenoid 27 and stop the preplasticising unit. Switch 26 simultaneously closes a circuit 33 for controlling the supply of hydraulic fluid to cylinder 14 for operating plunger 11.